问题
单项选择题
微型计算机的性能主要取决于（）的性能。
A．RAM
B．CPU
C．显示器
D．硬盘
答案
参考答案：B
解析：
微处理器CPU的性能主要决定了微机的性能。
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微型计算机的性能主要取决于（）的性能。
A．RAM
B．CPU
C．显示器
D．硬盘
参考答案：B
解析：
微处理器CPU的性能主要决定了微机的性能。
Mr Johnson was having trouble with his __16__ , __17__ he went to see a __18__. The doctor ___19__ his stomach carefully but couldn’t find any problem. Then he said, “Well, Mr Johnson, take it easy. There is __20__ serious(严重). Stop smoking and then you will be all right very __21__.” “But doctor,” answered Mr Johnson, “I___22__. I don’t like smoking at all.”“ Oh, I see,” said the doctor,” then stop drinking wine(酒) __23__.” “ But I don’t drink wine,” answered Mr Johnson. “ Don’t drink __24__ tea or coffee then,” the doctor said to him. “ I __25__ drink water,” answered Mr Johnson, “I don’t like tea or coffee.” The doctor __26__ for a while and then said,” Well, what __27_ you like to eat then?” “ Potatoes! I like potatoes very __28__..” Mr Johnson answered at once. “All right, Then stop __29___ potatoes.” Said the doctor as he got up to say goodbye __30___ Mr Johnson.
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